So is Esposito filling Castle in on the case or telling him that he still can't be a part of this investigation?
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Not to be left out of a murder investigation, Castle's found a way to work with Beckett. He's gotten his Private Investigator's license.
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Now that Kate's so happily married, maybe she'll have some advice she can share with Esposito about his relationship with Lanie.
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Despite the holiday lights, murder makes the season seem grim. Hopefully Castle can still bring the joy to Christmas.
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The team from the 12th precinct is on the case, hard at work even during the holiday season.
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Things look pretty tense in that subway. We hope that Castle, Beckett and Ryan are working behind the scenes to help save them.
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It appears there's another police officer on this train. Will she and Javi be able to team up to take the hostage taker down?
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Looks like our hostage taker has a gun in one hand and an inhaler in the other. That could make things even more interesting.
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Castle Quotes

Beckett: Wait, there's a sex scene in the book? Between us?
Castle: There's a sex scene between Nikki Heat and the roguishly handsome reporter who's helping her.
Beckett: Oh, good. So he's nothing like you.

So how did she take it, us being together?

Beckett